Add 40/10 and 81/30
1st number: 4 0/10, 2nd number: 2 21/30
40/10 + 81/30 is 67/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
40/10 = 40 × 3/10 × 3 = 120/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
81/30 = 81 × 1/30 × 1 = 81/30 - Add the two like fractions:
120/30 + 81/30 = 120 + 81/30 = 201/30 - 201/30 simplified gives 67/10
- So, 40/10 + 81/30 = 67/10
In mixed form: 67/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/10+81/30 40/20+81/30 40/10+81/60 40/30+81/30 40/10+81/90 40/50+81/30 40/70+81/30